[sdiy] popping a cap into a VCO

[megaohm]

>
>
> john mahoney wrote:
> >
> > I'm wondering if I can add a second cap to a Synthesizers.comoscillator.
> > These VCOs have a "LOW" range, but I'd like to add an "ULTRA LOW" mode,
> if
> > practical.



John,
  There's been some posts on Syn.com list about getting super low. I
suggested using the built in constant voltage source (pulse width turned
fulling counter clockwise = steady -5 volts). Patch the pulse out to a CV in
and it gets real slow.

  I'm pretty sure the Q106 has a stable voltage source (5 or 10 volt). A
little regulator by the power supply? How about attaching a voltage source
of -5 and/or -10 to a switch, resistor from switch connected to CV summing
point on pcb.

I don't know if there any drawbacks to this method? I'm curious.

peng
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